Door mounting and closing mechanism



March 15, 199.2. A. c. SLADKY ET AL 1,949,599

DOOR MOUNTING AND CLOSING MECHANISM Filed Aug. 8, 1930 2 Sheets-Sheet 1 March 15, 1932. A. c. SLADKY ET AL DOOR MOUNTING AND CLOSING MECHANISM Filed Aug. 8, 1930 2 Sheets-Sheet 2 knllll III 6 W? a Patented Mar. 15, 1932 UNITED STATES PATENT OFFICE AALEXAN'DER G. SLADKY AND JOSEPH. SLADKY, OF MILWAUKEE, WISCONSIN, ASSIGNORB TO THE NATIONAL ENAMELING- & STAMPING COMPANY, OF MILWAUKEE, WIS- CONSIN' DOOR MOUNTING AND CLOSING MECHANISM Application filed August 8, 1980. Serial No. 473,901.

This invention relates to improvements in door mounting and closing vmechanism.

One of the objects of this invention is the provision of improvements in the mounting of oven doors having incorporated in the mounting, improved means for normally urging'the doors toward a closed position and for retaining them in a tightly closed position to prevent any escape of the heat from the 1G oven around the door.

Another object of the present invention is the provision of a door mounting, together with improved closing and retaining mechanism which is so arranged with respect to the I door as to provide a direct pressure on the operating lever which is connected to the door, so that the door will be positively maintained in, a closed position and fit tightly against o the oven around the door opening toreduce to a minimum the escaping of the heatfrom the oven. r

A further object of the invention is the provision of novel means for mounting doors,

particularly that type of door used on stove ovens and the like, and also novel closing and retaining means which is of a comparatiively simple construction and can be quickly made ready for use in a very short space of time, as the entire mechanism is carried by a single piece adapted to be fitted into an oven, with the mechanism then connected to the door..

the invention consists in the novel features of. construction, the combination and arrangement of parts hereinafter more fully setforth, pointedout in the claims and shown in the accompanying drawingswherein Figure l is a front elevation of an oven door opening, illustrating the door in an open position; Figure 2 is a sectional view on the line 22' of Figure 4;

Figure 3 is a detail section on the line 33 of Figure 4;

Figure 4 is a longitudinal section on the line 4l'4' of Figure 1'; and,

Figure5 is a detail section on the line 5-5 of Figure 4. Referring more particularly to the draw- With theabove and other objects in view,

ings, 1 indicates an oven body having a door opening 2 with an inwardly projecting flange 3 extendingaround the area of the door opening. A door 4 is provided for GlOSiIlg' the opening 2 with its edges adapted to rest upon the flange 3.

The opening mechanism is carried by a plate 5 arranged within the body of the oven, as shown in Figure 2, and provided with an inwardly extending flange 6 properly connected to the bottom of the oven, as shown in Figure 4, while the forward end of the plate 5 is provided with a flange 7 abutting against the front of. the oven.

Arranged between the flange 7 and the front portion of the oven is a bracket 8 provided with a lateral extension 9 which has at its upper end an arcuate bearing member 10 and spaced upwardly from this bearing memher is a reinforcing plate 11. The upper spacing of the plate 11 leaves an opening which is adapted to communicate with a similar opening in the oven body which is generally indicated at 12.

An arcuate member 13 is provided with a similar shaped seat adapted to be fitted onto the arcuate member 10 for rocking movement, as shown in Figure 4. Extending laterally from one end of this arcuate member 13 is an arm 14 adapted to be connected to the oven door d and projecting from the other end of the arcuate member 13 is a second arm 15 having an offset portion 16' which is adapted to engage the lower endof plate 11 when the door 4: is moved to an open position, as shown in Figure 4a.

Pivotally connected to the inner end of arm 15 is a link 17 and this link has its other end pivotally connected to one arm ofa bell crank 18. This bell crank 18 is pivotally mounted on plate 5, as shown at 19-, the pivot point including a stub bolt20 having the head portion 21 thereof fitted into a suitable recess 22 in the plate 5, and having the recessvclosed by means of one wall of the oven. The bell crank is provided with an opening in which is arranged a collar 23- loosely surrounding the stub bolt 20, as shown at Figure 5, while suitable nuts 24 are used to maintain this bell crank in position upon the bolt.

The second arm of the bell crank 18 is provided with an aperture at its outer end, and engaged with this apertured end is one end of a coil spring 26, the other end of the coil spring being attached to an apertured bracket on the flange 7 of plate 5. It will be apparent that when the door is in a normally closed position, as illustrated by the dotted lines in Figure 4:, the link 17 is disposed at such an angle that the full power of the tension of spring 26 will be applied to arm 15, thus maintaining the door 4 in a tightly closed position at all times to prevent the escape of heat around this door when closed.

It will also be apparent that the door 4 can be quickly moved to a closed position through the tension of spring 26. The door is provided with a handle 28 whereby the same may be easily moved to an open position against the tension of spring 26.

As shown in Figure 4, the dotted line illustration shows the door and the mechanism in a closed position, and it will be noted that arm 15 is in a substantially vertical plane with link 17 on an acute angle, and the arm of the bell crank to which the link is connected bears downwardly on this link under the tension of spring 26, so that the door will be maintained in a tightly closed position. The open position of the mechanism and the door is illustrated in full lines with the spring 26 under increased tension. There might be cases where the door 4 is sufficiently heavy to overcome the tension of the spring when the door is in a horizontal open position, as shown at Figure 4, but in most instances, the tension of the spring will overcome the weight of the door and have a tendency to urge the door to a closed position so that the door can be quickly closed by disengaging the hand from the door when it is desired to close the same.

By applying this type of mechanism to stoves and connecting the operating mechanism up to the door, the door will always be maintained in a tightly closed position and prevent the escape of heat surrounding the door. In a great many door mountings in use at the present time, the spring action which has a tendency to retain the door in a closed position, becomes weakened and does not maintain the door in a tightly closed position. However, the use of a bell crank, the connecting link and the spring in this type of mechanism will positively maintain the door in a closed position. and should the spring become too weak to hold the door in a tightly closed position, the spring can be read ily changed for a new one without displacing the rest of the mechanism.

It will be noted that we have provided not only improved closing and retaining mechanism for doors, but have provided improved means for rockably mounting the door, said means to be used in place of the ordinary hinges in use at the present time. It will be noted that by connecting the arcuate men1- bers 13 to the door by means of the arms ll and then mounting the arcuate members 13 on the bearing member 10, the door is not only mounted for rocking movement whereby it can be easily swung to an open or closed position, but suitable mechanism is connected to the mounting so that the door can be readily actuated for moving the same to a closed position and retaining the same in this positi on until urged to an open position by applying manual power to the handle 28.

The application of a construction of this character not only provides an improved mounting for doors of this character, but reduces the cost of manufacturing stoves, with ovens attached thereto, or in the manufacture of ovens themselves, as the improved mounting can be cheaply incorporated in the construction of the oven and the mechanism very easily placed in position at a very small cost.

It will be noted that in connecting up the various parts of this mechanism, that the pivotal connections are such as to provide a free and easy movement of the bell crank and the link 17. In Figure 3, the connection between the link and the arm 15 is illustrated and comprises a stub bolt 29 having a nut 30 and the stub bolt 29 has surrounding the same, a sleeve 23, similar to sleeve 23. It might also be advisable to call attention to the fact that the end of link 17 which is connected up with arm 15, is provided with an ofiset 31 for bringing the end of this link into intimate contact with arm 15.

We claim:

1. The combination of an oven having a door opening and a door for normally c1osing said opening, arms carried by the door and rookably mounted on the oven, a bell crank rockably mounted at its angle in rear of the door opening and having its pivot point above the pivot point of the door, a link operatively connecting the upper arm of the bell crank to the arm of the door and a contractile coil spring connected with the other arm of the bell crank.

2. The combination with a door casing having a door opening and a door for normally closing said opening, bearing arms rigidly secured to the door and rockably mounted on the door casing, inner ends of the arms lying below the door opening when the door is in its closed position and above the door opening when the door is in its open position, a bell crank rockably mounted at its angle above the pivot point of the door and said arms, a link pivotally connected to the upper arm of the bell crank and to one of the arms of the door at the rear end thereof, and a contractile coil spring connected to the arm of the bell crank, as and for the purpose specilied.

3. The combination of an oven having a door opening and a door for normally closing said opening, the oven'having guide slots therein on opposite sides of the door opening adjacent to the lower end thereof, bearings carried by the lower walls of the slots, arouate bearing arms rigidly carried by the inner face of the door slidably extending through said slots and rockably mounted on said bearings, ofl'set extensions carried by the inner ends of the arms, a bell crank rockably mounted at its angle within the oven and having its pivot point above the pivot point of the door, the offset extensions of the arms lying below the door opening when the door is in its closed position and above the door opening when the door is in its open position, a link pivotally connected to the upper arm of the bell crank and to the inner end of the ofiset extension of one of the arcuate arms and a contractile coil spring connected to the other arm of the bell crank.

In testimony that we claim the foregoing we have hereunto set our hands at Milwaukee, in the county of Milwaukee and State of Wisconsin.

ALEXANDER C. SLADKY. JOSEPH SLADKY. 

